Switch-lock.



LA. MORRISON L N. J. BECKNER.

SWITCH LOCK.

APPucATloN r|LD1uNEs,19xa.

In11 lllI-I HJW@ Na/1 Jwm; BY WM5 .1

msss'as ATTORNEY 1. A. MORRISON L N. l. BECKNER.

SWITCH LOCK.

APPLlcAloN F1Lin1uNEs.1s|a.

Patented Nov. 26, 1918.

2 SHEETS-SHEET 2.

/ INVENTOR ATTOR N EY STATS nr one.

JOHN A. VMORRISON AND NOAH J. BECXNER, OF NGF/EH YAKIMA, WASHINGTON.

SWITCH-LOCK.

Application led. J une 6, 1918.

To all whom it may concern:

Be it known that we, JOHN A. MORRISON and Noni-r J.' BECKNER, citizens of the United States, residing at North Yakima, in the county of Yakima and State of VVashington, have invented certain new and useful Improvements in Switch-Locks, of which'the following is a specification.

This invention relates to railways, and more especially to switch stands; and the object of the same is to produce an improved lock for the switch lever.

A further object is to produce means for ejecting the lever from the lock when the bolt in the latter is retracted.

A yet further object of the invention is rovide means for releasing the key.

ther objects will appear in the following specification and claims, and refe-rence is made to the accompanying drawings, wherein Figure 1 is a side elevation of this device complete,

Fig. 2 is an enlarged elevation of the device Vwith the front plate of the casing removed,

Figs. 3 and 4 are vertical sections on the lines 3-3 and 4--4 respectively of Fig. 2,

Fig. 5 is a sectional detail on the line 54- 5 of Fig. 2.

Fig. 6 is a front elevation showing the vkey-hole guard.

In the drawings the numeral 10 desig ynates broadly a casing including front and rear plates or walls 11 and 12. the latter formed with spaced and depending` ears 13 and a hook 19 to engage the switch stand which we have not thought necessary to illustrate. The switch lever is shown at 16, pierced with an eye or hole 17 in one end and pivoted at 15 for swinging movement as usual. When this lever is swung to pendant position, the perforated end thereof passes into a channel 18 within the casing or housing. this channel being formed Vby two upright flanges l20 and 21 therein as bestl seen in Fig. 2, and these flanges have alined openings through which passes the `tip of a bolt 22, the bolt also between the flanges passing through the eye 17 in the lever 16 and locking the same in a manner which will be clear. The bolt slides within a yguide r23 within the casingas seen at the 0. 2,n and is provided through a pin 30 engaging a notch 29 Specification of Letters Patent.

Patented Nov. 26, 1918.

sei-iai No. 238,540.

in the lower end of a lever 27 which is pivoted at 28 and forked at its upper end as at 31, one fork-arm having an inturned hook 34 at its extremity. A spring 32 bearing against the lever 27 normally projects the bolt across the channel.

For retracting said bolt peculiar mechamsm is employed for swinging the lever 27 on its pivot 28, as will now be described. .lnto a key-hole 24 in the front wall 11 of the casing is passed a key 25 which has a tubular shank moving over a rigid stud 26 projecting forward from the rear wall 12 and surrounded by a tube 35 spaced `from the stud so as to produce an annular channel 36 between them. Into this channel slides the tubular stem of the key, while its bit 33 passes over the tube as perhaps best seen in Fig. 5. When the key is inserted its bit strikes a collar 37 which is slidably mounted around the tube 35 and urged forward by aspring 38, so that its normal tendency is to eject the key when the bit of the latter stands opposite the slot forming part of the key-hole 24 as usual. Said collar has a radial lip at one side as at 40 standin normally between two spaced lugs 41 on t e casing, and slidable betwen them so that the collar may not rotate while the key may. lAt its other side said collar has a hook 42 which engages behind the left hand fo1karm 31 when the collar is forward but disengages the same when the collar is pressed to the rear as shown in Fig. 5. Now when the key is inserted and the collar is moved and the spring 38 is compressed, the hook 42 has disengaged the fork arm 31; then the key is turned so that its bit 33 swings around between the fork-arms as indicated by the arrow in Fig. 2, finally moving the entire fork to the left and coming up against the hook 34 to prevent its further turning movement. This swings the lever 27 on its pivot 28 and retracts the bolt 22 and the same will remain retracted so long as the key is not moved. Reverse movement of the key is permissible until it passes the position shown in Fig. 2 and begins to ride up the inside of the right hand fork-arm, and during this movement it swings the lever 27 in the opposite direction and forcibly projects the bolt 22. Therecome aroun to a position opposite the slotted portion of the keyhole before it can be withdrawn. When'it reaches this position, the expansive force of the spring 38 will compel the withdrawal or ejection of the lrey and the expansion of this spring moves the collar 37 forward so that the hook reengages the left hand fork-arm 31 and the parts stand as seen in Fig. 2. lThe perforated end of the lever 16, or whatever element is to be engaged by the bolt 22, will passthrough an opening in' therear wall 1Q Vof the casing Y'and into the channel 18 between the two flanges 20 and 2.1,Land this perforation must come in alinenient with the bolt as will be clear. lVithin this channel stands a swinging linger pivoted at its upper end at 51 in one of thel'langes 21 and havinga lever v52 carried by-its pivot and provided with an .oifstanding ear 53 Ato which is connected' a contractile spring 54. rlhe position of parts is such that the normal tendency of the spring fist to swing the finger forwardy within the channel `1S f which in Areality is rear-wardfwithin the easing or housing, zwith the result thatit` ejects the element which was previously flocked therein. Also,Y for safetyl purposes we pro vide another spring'li VYwhichfmay'bear down on the ear 53 for the same purpose. Now when the element 16 Y*moves into the casing as shown by the arrow in Fig. 3, the'finger 50 is swung `inward so that the holes throughthetwo yflanges-20 and Qlfare. exposed and the bolt YYQ2 may be shot Vforward*through the 'i eye f 17 insaid element' 1G. Later, as'the bolt.' isf retracted, however, the 4force 1 of -ithe springs 54h and `55 vswings thelfingeeO "inr the opposite'direction landy ejectsk the'feleinentl from the casing asI -soon ias y:the bolt122; hasf'been l*completely ywithdrawn from the eye 17. f'illhus` it isf-hardlyl vpossible `forfthe operator even accidentally to leave 51 this device unlocked-for as-soon asf1it isunlocked" the element 16 is thrownlout of the lock casing and the operator wouldfsee'it. Furthermorehe cannot removethelrey without locking the deviceyand if his keyis yon'a ring or chain he 'cannot leave his ypost without securing the key. 'These considerations throw'every element of:` sa'fetyiaround` the structure'an'd vInalreit serviceable as aeswitchvlocl, and especially applicableto switches in'iinportant places lor on trunk yor through lines where yit is imperative 'that rno `switchman shall-leave the switch v'stand with the through Iline track open.

The foregoing description and the, dra-wings Ahave reference -tofwhatmay be considered the preferredyor approved, form of our, invention. EIt istto be understood'that we may makesuch'changesin lconstruction and f arrai'igement yand combination of' parts, materials, vdimensions, et i cetera, as may prove-expedientand fall -wi-thin the scope of the'fappended claims.

Having thus fully described our` invention` whatwe claim as new and desire to secure by Letters Patent, is

1. In a lock for switch stands, the co1n bination with a switch lever having an eye, a casing having an interior channel into which the perforated end of the` lever is adapted to pass, the walls of the channel having alined holes, and a bolt movable through said holes and the eye of the lever; of key-operated mechanism for actuating the bolt, a finger pivoted at its-Supper endwithin the casingand' hanging within said channel, a ylever fast on the finger andl having an outstanding ear, and a spring moving said ear in a vdirection'fto swing the finger and normally ejectv the switclnlever, for the purpose setforth.

2. In a-ilock for switch stands,the .coinbination witha switch lever yhaving an eye, a casingfhavinglan opening in its rearwall and an interior channel into-which the iperforated endof the lever is 'adapted to pass, the walls ofthe channel-havingfalinedholes and the casing havingfaguide opposite them, and ya bolt: movable in said-guide through saidy holesv `and the eyel -of thedever of Aa pivoted lever lconnected at its lower endwith -said bolt and having-a vvfork atl its upper end` key-operated mechanism working within said fork to swing the last-named lever .and actuate the bolt, a vfingery pivoted at litsu-p per end' within the casing and hanging within said channel, a-lever fast on the iingenp'ivot andfhavfing an outstanding ear, .andv -aspring moving said ear in a direction to swing-the finger and fnormally eject the switchlever, for the purpose set-forth.

V3. In ff aloclr for f switch: stands; the comb'ination with a casing having an openingflin its rearwa-ll, afpair of upright spacedflanges within the casing having alined holes, a

transversely movablenbolt registering with,Y

said holes, andl keyactuated mechanism for -r-etracting said bolt; of `a 'finger movably mounted between saidl` flanges and havingfa pivot extending through one of them, a lever fast on said pivot, and a spring fmoving said lever ina direction to normally swing the linger forward and ejectthe element which isvlocked bythe-projection of said bolt.

4. Iln a lock-of lthe class fdescribecl, the combination withl a casing having .a guide, a vboltf'moving therein, IalpivotedY lever confnected at-one endwith said' bolt and having its `other end forkedR anda V- spring moving the 'lever normally-'in a direction to project the bolt yof Ia A stud: and .a surrounding tube .fast within the casing and `defining an annular channel between them, the casing wall having a key-hole oppositelsaid channel and fork adapted for the insertion of a lkey which passes between the arms of saidY fork, `and fork-locking mechanism. slidably mount- -ed onsaidtubeiand thrown out of engagement with the fork by the insertion of the key.

5. In a lock of the class described, the combination with a casing having a guide, a bolt moving therein, a pivoted lever connected at one end with said bolt and having its other end forked, and a spring moving the lever normally in a direction to project the bolt; of a stud and a surrounding tube fast within the casing and defining an annular channel between them, the casing wall having a key-hole opposite said channel and fork adapted for the insertion of a key which passes between the arms of said fork, a collar slidably mounted on said tube and having a hook engaging one fork-arm to prevent the movement of said lever, and a spring pressing the collar forward and effecting such engagement until the key is inserted.

6. In a lock of the class described, the combination with a casing having a guide, a bolt moving therein, a pivoted lever connected at one end with said bolt and having Copies of this patent may be obtained for its other end forked, and a spring moving the lever normally in a direction to project the bolt; of a stud and a surrounding tube fast within the casing and dening an annular channel between them, the casing Wall having a key-hole opposite said channel and fork adapted for the insertion of a key which passes between the arms of said fork, a collar loosely encircling said tube, a hook on the collar to engage one fork-arm, a spring pressing the collar normally forward and yielding when theA key is inserted, a lip projecting radially from the collar, and a guide in the casing along which said lip slides.

In testimony whereof we hereunto affix our signatures in the presence of two Witnesses this 8 day of May A. D. 1918.

JOHN A. MORRISON. NOAH J. BEOKNER.

Witnesses OSCAR Woon, E. HAUETER.

ve cents each, by addressing the Commissiner of Patents,

Washington, D. C. 

